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Aquation of cis-diacetatobis(ethylenediamine)cobalt(III) ion in mixed aqueous-organic solvents

O. Grančičová and V. Holba

Department of Physical Chemistry, Faculty of Natural Sciences, Comenius University, CS-842 15 Bratislava


Abstract: Kinetics of aquation of the ds-diacetatobis(ethylenediamine)cobalt(III) ion was investigated in the medium of NaCl, NaBr, and NaCl04 as support­ing electrolytes and in binary aqueous-organic solvents containing metha­nol, isopropyl alcohol, tert-butyl alcohol, acetonitrile, acetone, and dioxane as nonaqueous cosolvents. It has been found that the complex cation is associated with the Сl- , Br-, and СlO4- anions and the kinetic measure­ments were used for calculating the association constants. The dependence of thermodynamic transfer functions on mole fraction of the nonaqueous cosolvent was used for drawing conclusions related to the solvation of the initial and transition state of the investigated reaction.

Full paper in Portable Document Format: 444a509.pdf


Chemical Papers 44 (4) 509–517 (1990)

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